Genic type-genetic basis of sex determination, Biology

Genic Type-Genetic basis of Sex Determination

In some organisms, certain indepe~ident genes located on different chromosomes are responsible for sex determination. Most species of fish illustrate this mode. The male may be represented as AA' for the sex determining genes, and the female as AA (as shown in figure). According to this assumption, maleness is determined by the genc A' which is dominant over A.
In a parasitic wasp, called Habrobracon, genes are responsible for sex determination in a different way. The sex determining gene has multiple alleles (Xu, Xb, XC,Xd).When two alleles in a zygote are different or hcterozygous (XaXb, XaXc, X"XC, etc.) a normal, fertile female is formed. If the alleles in the zygote are in homozygous (XaXa, XbXb, etc.) or hemizygous (Xa,Xb,Xc, etc.) condition males are formed.

Posted Date: 12/11/2012 4:33:10 AM | Location : United States







Related Discussions:- Genic type-genetic basis of sex determination, Assignment Help, Ask Question on Genic type-genetic basis of sex determination, Get Answer, Expert's Help, Genic type-genetic basis of sex determination Discussions

Write discussion on Genic type-genetic basis of sex determination
Your posts are moderated
Related Questions
which system give the signals to salivary gland

True or false, adaptations are the result of finding the best or only solution to a given problem a species faces.

Explain briefly how computed tomography (CT) helps the doctors in pinpointing the defects in the patient's body


how is water lost from respiratory surface

Explain about the Autodispensor? This is used to transfer accurate quantities of liquids that are difficult to pipette like concentrated acids, alkalis, etc. You will also use

Name the two hormones produced by the pancreas and say (a) in what circumstances, (b) in what way, they adjust the glucose concentration in the blood.

What is blood typing? The Blood typing is the determination, by means of tests, of the classification of a blood sample concerning blood group systems (specially the Rh system

What are diseases of the connective tissue? What are some of them? Diseases of the connective tissue are hereditary or acquired diseases(lots of autoimmune cause) characterized

economic importance of the phylum protozoa